| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.shell; |
| |
| import android.database.Cursor; |
| import android.database.MatrixCursor; |
| import android.database.MatrixCursor.RowBuilder; |
| import android.net.Uri; |
| import android.os.CancellationSignal; |
| import android.os.FileUtils; |
| import android.os.ParcelFileDescriptor; |
| import android.provider.DocumentsContract; |
| import android.provider.DocumentsContract.Document; |
| import android.provider.DocumentsContract.Root; |
| |
| import com.android.internal.content.FileSystemProvider; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| |
| public class BugreportStorageProvider extends FileSystemProvider { |
| private static final String AUTHORITY = "com.android.shell.documents"; |
| private static final String DOC_ID_ROOT = "bugreport"; |
| |
| private static final String[] DEFAULT_ROOT_PROJECTION = new String[]{ |
| Root.COLUMN_ROOT_ID, Root.COLUMN_FLAGS, Root.COLUMN_ICON, Root.COLUMN_TITLE, |
| Root.COLUMN_DOCUMENT_ID, |
| }; |
| |
| private static final String[] DEFAULT_DOCUMENT_PROJECTION = new String[]{ |
| Document.COLUMN_DOCUMENT_ID, Document.COLUMN_MIME_TYPE, Document.COLUMN_DISPLAY_NAME, |
| Document.COLUMN_LAST_MODIFIED, Document.COLUMN_FLAGS, Document.COLUMN_SIZE, |
| }; |
| |
| private File mRoot; |
| |
| @Override |
| public boolean onCreate() { |
| super.onCreate(DEFAULT_DOCUMENT_PROJECTION); |
| mRoot = new File(getContext().getFilesDir(), "bugreports"); |
| return true; |
| } |
| |
| @Override |
| public Cursor queryRoots(String[] projection) throws FileNotFoundException { |
| final MatrixCursor result = new MatrixCursor(resolveRootProjection(projection)); |
| final RowBuilder row = result.newRow(); |
| row.add(Root.COLUMN_ROOT_ID, DOC_ID_ROOT); |
| row.add(Root.COLUMN_FLAGS, Root.FLAG_LOCAL_ONLY | Root.FLAG_ADVANCED); |
| row.add(Root.COLUMN_ICON, android.R.mipmap.sym_def_app_icon); |
| row.add(Root.COLUMN_TITLE, getContext().getString(R.string.bugreport_storage_title)); |
| row.add(Root.COLUMN_DOCUMENT_ID, DOC_ID_ROOT); |
| return result; |
| } |
| |
| @Override |
| public Cursor queryDocument(String documentId, String[] projection) |
| throws FileNotFoundException { |
| if (DOC_ID_ROOT.equals(documentId)) { |
| final MatrixCursor result = new MatrixCursor(resolveDocumentProjection(projection)); |
| includeDefaultDocument(result); |
| return result; |
| } else { |
| return super.queryDocument(documentId, projection); |
| } |
| } |
| |
| @Override |
| public ParcelFileDescriptor openDocument( |
| String documentId, String mode, CancellationSignal signal) |
| throws FileNotFoundException { |
| if (ParcelFileDescriptor.parseMode(mode) != ParcelFileDescriptor.MODE_READ_ONLY) { |
| throw new FileNotFoundException("Failed to open: " + documentId + ", mode = " + mode); |
| } |
| return ParcelFileDescriptor.open(getFileForDocId(documentId), |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| } |
| |
| @Override |
| protected Uri buildNotificationUri(String docId) { |
| return DocumentsContract.buildChildDocumentsUri(AUTHORITY, docId); |
| } |
| |
| private static String[] resolveRootProjection(String[] projection) { |
| return projection != null ? projection : DEFAULT_ROOT_PROJECTION; |
| } |
| |
| private static String[] resolveDocumentProjection(String[] projection) { |
| return projection != null ? projection : DEFAULT_DOCUMENT_PROJECTION; |
| } |
| |
| @Override |
| protected String getDocIdForFile(File file) { |
| return DOC_ID_ROOT + ":" + file.getName(); |
| } |
| |
| @Override |
| protected File getFileForDocId(String documentId, boolean visible) |
| throws FileNotFoundException { |
| if (DOC_ID_ROOT.equals(documentId)) { |
| return mRoot; |
| } else { |
| final int splitIndex = documentId.indexOf(':', 1); |
| final String name = documentId.substring(splitIndex + 1); |
| if (splitIndex == -1 || !DOC_ID_ROOT.equals(documentId.substring(0, splitIndex)) || |
| !FileUtils.isValidExtFilename(name)) { |
| throw new FileNotFoundException("Invalid document ID: " + documentId); |
| } |
| final File file = new File(mRoot, name); |
| if (!file.exists()) { |
| throw new FileNotFoundException("File not found: " + documentId); |
| } |
| return file; |
| } |
| } |
| |
| @Override |
| protected RowBuilder includeFile(MatrixCursor result, String docId, File file) |
| throws FileNotFoundException { |
| RowBuilder row = super.includeFile(result, docId, file); |
| row.add(Document.COLUMN_FLAGS, Document.FLAG_SUPPORTS_DELETE); |
| return row; |
| } |
| |
| private void includeDefaultDocument(MatrixCursor result) { |
| final RowBuilder row = result.newRow(); |
| row.add(Document.COLUMN_DOCUMENT_ID, DOC_ID_ROOT); |
| row.add(Document.COLUMN_MIME_TYPE, Document.MIME_TYPE_DIR); |
| row.add(Document.COLUMN_DISPLAY_NAME, mRoot.getName()); |
| row.add(Document.COLUMN_LAST_MODIFIED, mRoot.lastModified()); |
| row.add(Document.COLUMN_FLAGS, Document.FLAG_DIR_PREFERS_LAST_MODIFIED); |
| } |
| } |